diff mbox series

[v2,35/36] mm: Avoid rewalk in mmap_region

Message ID 20230505174204.2665599-36-Liam.Howlett@oracle.com (mailing list archive)
State New
Headers show
Series Maple tree mas_{next,prev}_range() and cleanup | expand

Commit Message

Liam R. Howlett May 5, 2023, 5:42 p.m. UTC 
If the iterator has moved to the previous entry, then step forward one
range, back to the gap.

Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
---
 mm/mmap.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox series

Patch

diff --git a/mm/mmap.c b/mm/mmap.c
index 1602c854133a4..71733953ff836 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -2636,6 +2636,9 @@  unsigned long mmap_region(struct file *file, unsigned long addr,
 	}
 
 cannot_expand:
+	if (prev)
+		vma_iter_next_range(&vmi);
+
 	/*
 	 * Determine the object being mapped and call the appropriate
 	 * specific mapper. the address has already been validated, but